1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
#include "timer.hpp"
#include "compat/assert.hpp"
namespace floormat {
namespace {
#if 1
constexpr auto MAX = (uint64_t)-1, HALF = MAX/2;
static_assert(MAX - (MAX-0) <= 0);
static_assert(MAX - (MAX-1) <= 1);
static_assert(MAX - (MAX-2) <= 2);
static_assert(HALF + HALF + 1 == MAX);;
static_assert(MAX - HALF <= HALF+1);
//static_assert(MAX - (MAX-1) <= 0); // must fail
//static_assert(MAX - (MAX-2) <= 1); // must fail
//static_assert(MAX - HALF <= HALF); // must fail
#endif
} // namespace
Ns operator+(const Ns& lhs, const Ns& rhs)
{
constexpr auto max = (uint64_t)-1;
auto a = lhs.stamp, b = rhs.stamp;
fm_assert(max - a <= b);
return Ns{a + b};
}
Ns operator-(const Ns& lhs, const Ns& rhs)
{
auto a = lhs.stamp, b = rhs.stamp;
fm_assert(a >= b);
return Ns{a - b};
}
Ns operator*(const Ns& lhs, uint64_t b)
{
auto a = lhs.stamp;
auto x = a * b;
//fm_assert(!(a != 0 && x / a != b));
fm_assert(a == 0 || x / a == b);
return Ns{a * b};
}
uint64_t operator/(const Ns& lhs, const Ns& rhs)
{
auto a = lhs.stamp, b = rhs.stamp;
fm_assert(b != 0);
return a / b;
}
Ns operator%(const Ns& lhs, uint64_t b)
{
auto a = lhs.stamp;
fm_assert(b != 0);
return Ns{a % b};
}
bool operator==(const Ns& lhs, const Ns& rhs)
{
auto a = lhs.stamp, b = rhs.stamp;
return a == b;
}
std::strong_ordering operator<=>(const Ns& lhs, const Ns& rhs)
{
auto a = lhs.stamp, b = rhs.stamp;
return a <=> b;
}
Ns::operator uint64_t() const { return stamp; }
Ns::operator float() const { return float(stamp); }
uint64_t Ns::operator*() const { return stamp; }
} // namespace floormat
|